The comic book character Ace the Bat-Hound was the canine crime-fighting partner of Batman and Robin in DC Comics of the 1950s and 1960s. Ace debuted in Batman #92 (cover-dated July 1955). Ace's creation was inspired by the success of Krypto's debut in Adventure Comics #210 (March 1955), and by German Shepherd Dog from detective films and serials, such as Rin Tin Tin and Ace the Wonder Dog. He was created by writer Bill Finger and artist Sheldon Moldoff.
Ace was a German Shepherd Dog originally owned by an engraver named John Wilker. He was found by Batman and Robin after his master was kidnapped by a gang of counterfeiters. Batman used Ace to try to locate Wilker. Because he had already placed a large number of "lost dog" announcements for Ace in his civilian identity of Bruce Wayne, he was concerned that anyone recognizing Ace (who had a prominent star-shaped marking on his forehead) might make the connection between Bruce Wayne and Batman. To forestall that problem, he hastily improvised a hood-like mask for the dog that incorporated the bat emblem as a dog tag dangling from Ace's collar. Ace was subsequently christened "The Bat-Hound" by a criminal he helped Batman to apprehend.
Wilker later took a new job that made it difficult for him to take care of Ace, so he left the dog to Bruce Wayne. Wilker was never aware that Ace was the Bat-Hound or that Bruce Wayne was Batman.
Ace disappeared from the Batman comics after Julius Schwartz took over as editor in 1964, and made only very occasional comic book appearances in the years afterward.
Read more about Ace The Bat Hound at Wikipedia
Official Site: D.C. Comics
Researched by: razorback